Spatial resolution measurements for passive microwave radiometry using a tissue-equivalent phantom.
A tissue-equivalent "hot" line source phantom is described for assessing spatial resolution in passive microwave radiometry systems. LSFs were measured for two rectangular waveguide antennas connected to a 4.7-GHz radiometer. The normalized LSFs and corresponding modulation transfer functions were found to be independent of line source temperature, but dependent upon antenna size, orientation, and line source depth.
Behrman
R H
RH
Medical Physics Division, Tufts-New England Medical Center, Boston, Massachusetts 02111.
Brodie
M A
MA
Sternick
E S
ES
Grabowy
R S
RS
Gemmell
L A
LA
Carr
K L
KL
D055592:Biophysical Phenomena; D001703:Biophysics; D006801:Humans; D008872:Microwaves; D008961:Models, Structural; D011874:Radiometry / Q000295:instrumentation / Q000379:methods*; D013817:Thermography / Q000295:instrumentation / Q000379:methods*